Intraoperative CareIntraoperative PeriodAnesthesia, GeneralMonitoring, IntraoperativeAnesthesiaAnesthesia, LocalIntraoperative ComplicationsAnesthesia, EpiduralAnesthesia, SpinalAnesthesia, InhalationAnesthesia, ConductionAnesthesia, IntravenousCerebral ArteriesAnesthesia, ObstetricalAnesthesia Recovery PeriodCerebral InfarctionAnesthesia, DentalCerebrovascular CirculationCerebral PalsyAnesthetics, IntravenousMiddle Cerebral ArteryAnesthetics, InhalationPropofolAdjuvants, AnesthesiaIsofluraneAnesthesiologyAnesthetics, CombinedAnesthetics, LocalMethyl EthersBrainCerebral AngiographyPostoperative ComplicationsNitrous OxideAnestheticsInfarction, Middle Cerebral ArteryMalaria, CerebralCerebral VeinsBrain IschemiaTreatment OutcomeHalothaneIntraoperative AwarenessFentanylLidocaineProspective StudiesTime FactorsCerebral HemorrhageFrozen SectionsBupivacainePreanesthetic MedicationBlood Loss, SurgicalNeuronavigationAnesthetics, GeneralAmbulatory Surgical ProceduresKetamineRetrospective StudiesThiopentalNerve BlockMagnetic Resonance ImagingAnesthesia, Closed-CircuitPain, PostoperativeElectroencephalographyAnesthesia, CaudalPentobarbitalHemodynamicsSurgery, Computer-AssistedTomography, X-Ray ComputedNeurosurgical ProceduresBlood PressureAnesthetics, DissociativeSurgical Procedures, OperativePreoperative CareIntubation, IntratrachealEnfluraneAnesthesia, IntratrachealXenonIschemic Attack, TransientConscious SedationBlood Flow VelocityCarbon DioxidePostoperative PeriodOxygenXylazineCesarean SectionCraniotomyHypotensionAnterior Cerebral ArteryAnesthesia Department, HospitalConsciousness MonitorsAlfentanilSubarachnoid HemorrhageIntracranial AneurysmPostoperative CareBrain DiseasesDouble-Blind MethodFollow-Up StudiesOperating RoomsConsciousnessCerebrovascular DisordersLaparoscopyCerebral Ventricles